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(C) The primary ore of aluminum is bauxite $(Al_2O_3 \cdot 2H_2O)$.
Concentration of bauxite is carried out by the leaching process,specifically know

Vedclass · Accepted Answer

Bayer process

Vedclass · Answer

(C) The primary ore of aluminum is bauxite $(Al_2O_3 \cdot 2H_2O)$.
Concentration of bauxite is carried out by the leaching process,specifically known as the Bayer process.
In this process,the powdered ore is treated with a concentrated solution of $NaOH$ at $473-523 \ K$ and $35-36 \ 	ext{bar}$ pressure to dissolve the aluminum as sodium aluminate,leaving behind impurities like $Fe_2O_3$ and $SiO_2$.

Which method is used for the concentration of aluminum ore?

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